T. E. Springer

TL;DR: In this paper, an isothermal, one-dimensional, steady-state model for a complete polymer electrolyte fuel cell (PEFC) with a 117 Nation | membrane is presented, which predicts an increase in membrane resistance with increased current density and demonstrates the great advantage of a thinner membrane in alleviating this resistance problem.

TL;DR: In this article, the diffusion coefficient and relaxation time of water in the membrane and the protonic conductivity of the membrane as functions of membrane water content were measured, and the ratio of water molecules carried across the membrane per proton transported, the electro-osmotic drag coefficient, was determined for a limited number of water contents.

TL;DR: In this paper, the ac impedance spectra of polymer electrolyte fuel cell (PEFC) cathodes measured under various experimental conditions are analyzed and compared by simultaneous least squares fitting of a set of spectra measured for several cathode potentials.

TL;DR: In this article, water uptake and transport parameters measured at 30 C for several available perfluorosulfonic acid membranes are compared and water sorption characteristics, diffusion coefficient of water, electroosmotic drag, and protonic conductivity were determined for Nafion 117, Membrane C, and Dow XUS 13204.10 developmental fuel cell membrane.

TL;DR: In this paper, the authors present a fit between model and experiment for well-humidified polymer electrolyte fuel cells operated to maximum current density with a range of cathode gas compositions.